Water-gage cock.



PATENTED MAY 19, 1903.

' J. G. JENSEN.

WATER GAGE COCK. V APPLIOATION FILED no. 26, 1902.

I0 MODEL.

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UNITED STATES Patented May 19, 1903.

PATE T OFFICE.

JENS O. JENSEN, OF PENTWATER, MICHIGAN, ASSIGNOR TO ALBERT. G.

WEIDENSEE, OF PENTWATER, MICHIGAN.

WATER-GAGE COCK.

SEECIFICATION forming part of Letters Patent No. 728,722, dated May 19, 1903.

Application filed-December 26, 1902. Serial No. 136.675. (No model.)

To all whom it may concern:

Be it known that I, JENS O. JENSEN, acitizen of the United States, residing at Pentwater, in the county of Oceana and State of Michigan, have invented new'and useful Improvements in Water-Gage Cocks, of which the following is a specification.

This invention relates to certain new and useful improvements in water-gage cocks to be used in connection with steam-boilers, and more especially to be used in connection with boilers of marine engines.

The invention consists in the construction and combination of parts hereinafter fully described and claimed. 7

The objects of my invention are, first, to construct a water-gage cock that will not become clogged by any foreign matter within the boiler; second, to furnish a suitable means for closing the opening between the valvechamber and the conduit or passage-way into the boiler in order to enable the user to clean or repair the exhaust-valve; third, to furnish an escape-valve that will work quickly and efiiciently when mechanically opened, but which will be normally held elos ed by steam-v pressure. These objects I accomplish by means of the mechanism illustrated in the following drawings, in which- Figure l is a vertical longitudinal sectional view of a water-gage cock constructed in accordance with my invention. Fig. 2 is a horizontal longitudinal section of the said watergage cock. Fig. 3 is aninverted plan view of the bent arm that is used to open the exhaust-steam valve. Fig. 4 is a side elevation of the valve-stem of the exhaust-valve, and Fig. 5 is a sectional View of the valve-stem on line as y of Fig. 4.

The main stem of the watergage cock which enters the boiler is shown by a, and it is provided with the opening I), which terminates at one side of the valve, as shown in Fig. 2.

d is an intermediate chamber for the valve g, which valve (1 closes and opens the passage-way between Z) and the chamber d. The valve (1 has a valve-stem W and a handwheel V, a threaded cylindrical projection 2, preferably madeintegral with the stem a, with which thread is engaged the threaded collar t,

the said collar 25 being provided with an internal screw-thread, which engages with the threaded part ofthe valve-stem W. In order to make a more tight fit, I provide a collaru, which is threaded and engages with the u'p-. per and outer threaded partof the collar i, and between the upper end of the collar t and the collar u I provide a steam-tight packing, as shown by Z.

The passage-way between the chamber f and the chamber d is shown by e, which passage-way is always open.

A stem a is provided with the screw-thread '7', by means of which the stem is engaged with the walls of the boiler. by P, which is preferably not threaded, pro-- The part shown jects into the boiler beyond the inner surface thereof a suitable distance to prevent the opening to the passage-way b from becoming clogged by scales or any foreign substance Within the boiler.

. When the valve q is withdrawn from its seat, the steam will pass freely into the chamber f, creating a pressure in said chamber. From the chamberfis the internally-threaded projection 3. (Shown in Fig. 1.) Fitting into the projection 3 is the collar I, which has an unthreaded opening for the valvestem of valve h. The inner end of the collar I forms the valve-seat of the valve h. The valve-stem of valve h is provided with a series of channels, as shown by g, through which channels the steam passes freely when the valve his raised from its seat. The valvestem of h is also provided with a groove, as in Figs. 1 and 4:, with which the bifurcated arm m engages. The valve h is operated by means of the bent arm m and lever 'n. The arm passes loosely through the opening S in the rear end of the main stem a. This lever 17. is pivoted at O to a lug on the stem at and at O to the upper end of the arm m, as shown clearly in Fig. l.

The operation of my invention is as follows: The stem 0. is screwed into the boiler until the parts P project beyond the inner surface of said boiler. The valve q being opened, the steam rushes through. the passage-way b and into the chamber f, pressing the valve h to its seat, so that no steam or By raising the free end of water can escape.

the lever n the steam, if there be any in the boiler, will rush from the chamberf through the channels g g in the valve-stem, thereby showing that there is water in the boiler. As soon as the lever n is released the steampressure will at once press the valve h to its seat and cut 06 the flow of steam. Ordinarily the valve q is left open; but in case the valve h for any reason does not work properly the valve q maybe closed, when the valve h and its connecting parts may be removed for cleaning and repairing.

Having thus described my invention, what I claim to have invented, and desire to secure by Letters Patent, is

In a Water-gage cook, a bored stem adapted to be connected with a steam-boiler and the bore serving for the passage of steam, a valve carried by the stem, detachably mounted and held normally closed by the pressure of the steam thereagainst, a hand-lever fulcrnmed upon the stem, an angular arm jointed to said lever, one of the branches having a bifurcation, the outer end of the valvestem being grooved to receive said bifurcation and the other branch of the arm extending freely through an opening in the outer end of the first-mentioned stem, and a'sec- 0nd valve carried by said first-mentioned stem between the exhaustvalve and the boiler end of the first-mentioned stem.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. JENS O. JENSEN.

' Witnesses:

G. P. J QHNSON, 0. W. MARSH. 

